NRP1 and viral infectious disease: Studies based on publicly available transcriptome databases revealed that one of the most likely enhancers of direct viral infection in the brain is NRP1, which is highly expressed in multiple neuron and glial cell types, including astrocytes and microglia (Cantuti-Castelvetri et al., 2020; Daly et al., 2020; Lonsdale et al., 2013).